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Developer Tools · head to head

Deno vs Qualys VMDR

Deno logo

Deno

Developer Tools

A fast, open-source, fully Node-compatible JS runtime with TypeScript baked right in

From
Free
Free plan
Yes
Full reviewWebsite
Qualys VMDR logo

Qualys VMDR

Cybersecurity

Cloud-delivered vulnerability management licensed per asset, using scanner appliances and a lightweight agent.

From
$3/month
Free plan
No
Full reviewWebsite

The short version

  • Only Deno has a free tier, so it costs nothing to try first.
  • Each has a real cost: Deno egress bandwidth overage costs $0.20/GB which can become expensive for high-traffic applications; Qualys VMDR licensing is per asset and each capability is its own subscription, so patch management, endpoint detection, web application scanning, container security and policy compliance are separate line items, and the platform demonstrated in a proof of concept is rarely the platform in the quote.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Deno and Qualys VMDR actually diverge.

Attributes where Deno and Qualys VMDR differ
AttributeDenoQualys VMDR
Starting priceFree$3/month
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebWeb, Cloud, Api
CategoryDeveloper ToolsCybersecurity
FoundedUnknown1999

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Deno

Nothing recorded that Qualys VMDR does not also cover.

Only in Qualys VMDR

  • Cloud Agent
  • Scanner appliances
  • Authenticated scanning
  • TruRisk scoring
  • Asset inventory
  • Patch Management
  • Cloud connectors
  • Container sensor

What people use each for

The jobs each tool is most often brought in to do.

Deno

  • Running TypeScript natively without transpilation overheadnot Qualys VMDR
  • Migrating Node.js applications to secure-by-default runtimenot Qualys VMDR
  • Deploying edge functions and serverless containers seamlesslynot Qualys VMDR
  • Consolidating developer tools into single binarynot Qualys VMDR

Qualys VMDR

  • A hybrid workforce where scheduled network scans miss most laptops and continuous agent-based assessment is the only way to get real coveragenot Deno
  • PCI DSS external scanning where an approved scanning vendor report is a contractual requirementnot Deno
  • An estate spanning datacentre, multiple public clouds and endpoints that needs one vulnerability view rather than three toolsnot Deno
  • Organisations replacing a manual patch-verification process with agent-reported evidence that a fix actually landednot Deno

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Deno

  • Egress bandwidth overage costs $0.20/GB which can become expensive for high-traffic applications
  • CPU time overage is $0.10/hour on Pro and Builder tiers, adding to costs for compute-intensive workloads
  • Enterprise pricing is not disclosed; requires sales contact

Qualys VMDR

  • Licensing is per asset and each capability is its own subscription, so patch management, endpoint detection, web application scanning, container security and policy compliance are separate line items, and the platform demonstrated in a proof of concept is rarely the platform in the quote.
  • Ephemeral cloud instances consume asset entitlement until they age out of inventory, so an autoscaling group that creates and destroys hosts hourly can burn licence capacity on machines that existed for minutes, and controlling that means tuning purge policies rather than tuning the cloud.
  • Authenticated scanning produces materially better results than unauthenticated, but it requires storing and rotating privileged credentials for every target platform, which is a security project in its own right, and teams that skip it receive reports full of unconfirmed potential findings that nobody trusts.
  • The console is a set of modules with separate interfaces, search syntaxes and report engines, so an analyst moving between vulnerability management, policy compliance and web application scanning learns each one, and cross-module reporting usually ends in a spreadsheet or a script against the API.
  • The tool surfaces findings far faster than any organisation can remediate them, and it does not solve the ownership problem: without an agreed prioritisation policy and a named owner in IT operations, a first scan producing tens of thousands of findings becomes a dashboard that everyone learns to ignore.

Pricing, plan by plan

Deno

Free
  • FreeFree
    • 1 million requests/month
    • 20GB egress bandwidth
    • 10 apps
  • Pro$20/month
    • 5 million requests/month
    • 200GB egress
    • 50 apps
  • Builder$200/month
    • 25 million requests/month
    • 2,000GB egress
    • 10,000 apps
  • Enterprise$null/month
    • Custom limits on all metrics
    • 99.95% reliability SLA
    • Email support with SLA

Qualys VMDR

$3/month
  • VMDR$3/month
    • Per asset
    • Vulnerability scanning
    • Detection
  • VMDR+$5/month
    • All VMDR features
    • Advanced analytics
    • Cloud integration
  • VMDR Complete$7/month
    • All VMDR+ features
    • Threat intel
    • Response automation

Which should you pick?

Choose Deno if

  • You want to start without paying.
Deno review

Choose Qualys VMDR if

  • You need cloud agent.
  • You work on Web, Cloud, Api.
  • You also want scanner appliances.
Qualys VMDR review

Questions people ask

Is Deno or Qualys VMDR better?
Neither clearly leads. Deno starts at Free and Qualys VMDR at $3/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Deno or Qualys VMDR?
Deno has a free tier; the other does not. Paid plans start at Free for Deno and $3/month for Qualys VMDR.
Does Deno or Qualys VMDR run on more platforms?
Deno runs on Web. Qualys VMDR runs on Web, Cloud, Api.
Can I use Deno for free?
Yes. Deno has a free tier, so you can try it without paying. Qualys VMDR starts at $3/month.
What is Deno best used for?
Deno is most often used for running typescript natively without transpilation overhead, migrating node.js applications to secure-by-default runtime, deploying edge functions and serverless containers seamlessly, consolidating developer tools into single binary. Of those, running typescript natively without transpilation overhead and migrating node.js applications to secure-by-default runtime are not what Qualys VMDR is typically brought in for.
What can Deno do that Qualys VMDR cannot?
Qualys VMDR covers Cloud Agent, Scanner appliances, Authenticated scanning, TruRisk scoring.

Answered from the vendors’ own pages

Deno: How much does Deno Deploy cost?

Deno Deploy offers a free tier at $0/month, Pro at $20/month, and Builder at $200/month. Enterprise has custom pricing. All plans include base request and bandwidth limits, with overage charges for additional usage.

Source
Qualys VMDR: Agent or scanner: which do I need?

Usually both. The agent covers endpoints and servers you control and gives continuous data; scanners cover devices you cannot install an agent on, such as network gear, printers and appliances, and provide the external perimeter view.

Deno: What are Deno Deploy's overage charges?

Egress bandwidth overages cost $0.20 per GB. CPU time overages are $0.10 per hour on Pro and Builder tiers. Memory time and KV database operations also incur charges beyond included limits.

Source
Qualys VMDR: Does it patch as well as detect?

Yes, through the Patch Management module, which is a separate subscription using the same agent. Core VMDR detects and prioritises but does not deploy fixes.

Deno: How many apps can I deploy on Deno's free plan?

The free tier includes 10 apps with up to 1 concurrent build. Pro tier supports 50 apps with 3 concurrent builds, and Builder supports 10,000 apps with 20 concurrent builds.

Source
Qualys VMDR: How are assets counted for licensing?

By the number of assets in inventory, which includes cloud instances and containers depending on the modules in use. Short-lived cloud assets count until they are purged, so purge settings directly affect what you consume.

Deno: How many team members can access Deno Deploy?

The free tier supports up to 3 team members. Pro supports 10 team members. Builder supports 25 team members. Enterprise has custom seat limits.

Source
Qualys VMDR: Can I keep the data in a specific region?

Yes. Qualys operates several regional platform instances and you choose which one your subscription lives on. Moving between them later is not trivial, so decide before onboarding.

Qualys VMDR: Does it scan web applications?

Web Application Scanning is a separate module licensed per application, not part of core VMDR, and it is a dynamic scanner with the usual limits around authenticated flows in single-page applications.

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